The audio was reportedly given to civil rights attorney Jennifer Harbury by one of her clients, who asked to remain anonymous, last week. For roughly eight excruciating minutes, you can hear the wails of young children crying out for their parents, confused consular workers trying to keep track of all the kids, and at least one male voice, identified as a Border Patrol officer, for some reason deciding to crack a joke about the whole thing.

“Well, we have an orchestra here," the man is heard saying at the beginning of the audio, in Spanish. "What’s missing is a conductor."

At one point, a voice identified as six-year-old Alison Jimena Valencia Madrid speaks up asking if she can call her aunt. According to ProPublica, the Salvadoran girl did manage to get a hold of her relative, but the woman said she was too afraid to put her own immigration status in jeopardy to intervene. She's managed to stay in touch with her niece, and the girl's mother, but noted the two haven't been able to speak to each other since they were separated.

"It was the hardest moment in my life," the aunt told ProPublica. "Imagine getting a call from your six-year-old niece. She’s crying and begging me to go get her. She says, 'I promise I’ll behave, but please get me out of here. I’m all alone.'"

The audio provides a gut-wrenching glimpse inside the dozens of shelters housing at least10,000 unaccompanied minors across the country. And even after the sound stops, it's almost impossible to get the seemingly endless cries of unseen children out of your head, many of whom have no way of knowing if they'll ever be reunited with their families.